Upside Down Roof System

Also known as a protected membrane or upside down roof inverted roofs employ insulation which can resist water absorption provide excellent thermal performance be unaffected by freeze and thaw cycles withstand surface traffic and be protected from uv and mechanical damage among others.

Upside down roof system. In an inverted membrane system the conventional membrane arrangement is inverted or turned upside down. The system is also referred to as a protected membrane or upside down roof. In an inverted membrane system the coventional membrane arrangement is invereted or turned upside down. Inverted roof membrance assembly irma systems are used in applications where the membrane requires protection from site specific hazards.

Insulation boards are loose laid on top of the membrane and then weighted down with paving slabs or gravel ballast. The so called upside down roof is simply a rearrangement of the normal elements of a roofing system to try and overcome some of the disadvantages of the conventional arrangement. Benefits of inverted roofs the great benefit of inverted roofs is that the insulation protects the membrane from extremes of weather such as frost uv exposure and the expansion and contraction that comes about from summer winter temperature cycles which can be as much as 80 c on some roofs. Illustrations courtesy of american hydrotech inc.

Inverted roof membrane assembly irma systems are used in applications where the membrane requires protection from site specific hazards.